Ocean waters freezes at about -2 1/2 °c. fresh water freezes at 0°c. antifreeze, a liquid used to cool most car engines, freezes at -64°c. imagine that the temperature is exactly at the freezing point for ocean water? how many degrees must the temperature drop for antifreeze to turn to ice?
a.)61.5°c
b.)62.5°c
c.)64°c
d.)66.5°c

Alright, so we have the ocean water freezing point temperature (-2.5 C) and the Antifreeze temperature (-64 C). The temperature is currently at the ocean water freezing temperature (-2.5 C) and we want to find the difference between that and the freezing temperature for Antifreeze (-64 C). Since both numbers are negative, it's OK to make both positive and find the difference between those in this case. Therefore, we need to find the difference between 64 and 2.5, and 64-2.5=61.5 (A)